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JH-2010B Intelligent Medium Flow Particle Sampler with Built in Lithium Battery
JH-2020 Dual channel Constant Temperature and Current Atmospheric Sampler with Built in Lithium Battery
JH-2020 Dual channel Heating Constant Current Atmospheric Sampler with Built in Lithium Battery
LB-7022 (D) portable fast oil fume monitor (built-in lithium battery version)